<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      const p = new Promise((resolve, reject) => {
        resolve(1);
      });
      p.then((data) => {
        console.log(data); //1
        return new Promise((resolve, reject) => {
          resolve(2);
        });
      })
        .then((data) => {
          console.log(data);
          return new Promise((resolve, reject) => {
            reject(new Error(data));
            // resolve(3);
          });
        })
        .then((data) => {
          console.log(data);
        })
        .catch((error) => {
          console.log("error", error.message);
        });
    </script>
  </body>
</html>
